Work-gage.



C. MILLER. WORK GAGE. APPLICATION FILED MAR. 17. I9I 7.

Patented Aug. 28, 1917 -S H E ET I 2 SHEETS M N Q m M 9 MN mm XN =1:SE5 i Q.

& m wrm Q HURT MILLER, 01? DAYTON, OHIO, ASSIGNOR TO THE NORTH SIDE TOOL WORKS, OF DAYTON, OHIO.

WORK-GAGE.

Specification of Letters Patent.

Application filed. March 17, 1917. Serial No. 155,404.

To all whom it may concern:

Be it known that I, GURT MILLER, citizen of the'United States, residing at Dayton, 111 the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Work-Gages; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of refer ence marked thereon, which form a part of this specification.

This invention relates to certain improvements in machines for gaging the accuracy of work and may be termed a universal work gage. The object of the invention is to provide a gage of this character for measuring or gaging work from a standard size and for doing this work quickly and accurately.

Preceding a detail description of the invention, reference is made to the accompanying drawings of which Figure 1 is a front elevation of my improved Work gage. Fig. 2 is a side elevation thereof. Fig. 3 is a top plan View of the machine. Fig. 4: is an enlarged partial sectional viewof the cross head and parts mounted thereon. Fig. 5 is a sectional view on the line 5-5 of Fig. .4:- Fig. 6 is a sectional view on the line 66 of Fig. 3, and Fig. 7 is a detail view of an anvil that may be utilized where work of a special character to be gaged renders it necessary.

In a detail description of the invention, similar reference characters denote corresponding parts in the several views of the drawings. The frame work of the machine consists of a base 2, a standard 1 extending therefrom and having a forwardly projected anvil portion 3 which supports the anvil or table 4:. The frame work also consists of a vertical bearing comprising fixed clamping members 11 and 11 respectively which support a Vertical adjustable standard 12 to be again referred to. The standard 12 is held in the desired position by handle screws 33 i which penetrate apertured lugs of the clamping members 11 and 11, and thus the standard 12 may be held rigidly in its bearing. The portion 3 of the frame work before referred to also provides a horizontal bearing for a shaft 5 which supports standards 8 8. The standards 88 terminate at their lower and upper ends in clamp members 6 and 9 of the respectively. The lower clamps 6 receive the horizontal shaft 5 and these clamps are tightened on the shaft by means of handle screws 7. One of the clamps 9 supports a movable workholding center pin 13 and the other of said clamps 9 supports a fixed work holding or center pin 1% which coiiperates with the pin 13 in holding cylindrical work or all work done on centers. The clamps 9 are tightened or loosened as the case may be by handle screws 10. The Workto be gaged may be of a character to besupported on the work table 4: or may be of a character that would be better supported between the centering pins 13 and 14: The pin 13 is movable against a spring which surrounds the body of said pin and is inclosed by the clamping member 9 of said pin13. The work engaging ends 31 of the centering pins 13 and 14: are tapered to apoint to facilitate a proper engagement with the workto be held thereby in gaging. Fig. 7 illustrates a form of anvil 32 thatmay be substituted for the fixed work holding pin 14 when work of a particular character is required to be gaged, such for example Supported upon the upper end of the standard 12 is a cross head 16 one end of which lies above the work table and the work centering pins 13 and 14. The other end of said cross head 16 projects upwardly 'as at 28 and supports the indicating gage 27 which has a bracket 27' extending therefrom which is rigidly secured to the said part 28. The indicating gage 27 as shown in F 1 contains an indicating dial having calibrations over which a pointer 34; moves. This indicator registers in the present instance the tenthousandth part of an inch and the pointer 34 thereof is operated through the vertical movement of a pin 35 which passes through atubular guide 36 projecting from the lower side of the indicator gage. The gage hand 34 is operated from the pin 35, the spindle dial hand 3% being actuated from the pin 35. These are well known features of the indicator and require no detail illustration. The lower end of pin 35 has a head 26 which at all times rests upon the head 25 on the end of the indicator lever 23. The indicator lever 23 is made of aluminum and is pivoted at 24 to the end of the cross head 16 opposite the indicator 27. Below the end 25 of said lever an adjusting screw 29 is placed for adjusting the pin 35 to bring Patented aa as, 1917. j

as annular pieces.

the pivotal end of the arm 23 a vertical adjusting screw 21 is placed which passes vertically through said arm at a point adj acent to its pivot. The distance of the pivot 2a of: the lever 23 from the head "of the pin-15 1s one-tenth the distance of the end 25 of said lever from said pin 15, therefore, the range of movement of gage vpin 35 isamplified in comparison with the movement of thepin 15. A horizontal locking screw 22 penetrates the endof the lever 23 and engages the screw 21' laterally to'lock the same in its proper adjusted-position. ,A pin 15 actuates the gage lever 23 and is arranged below the screw 21 and is provided with a head 21 that engages the end of said screw The actuating pin 15 has a coil spring 19 around its body within a tubular portion 17 of the cross head16. This spring 19 is inclosed between the head 21 of pin-15 and a nut 20 anuexerts'a pressure to maintain a contact between the screw 21 and the head 21 of said pin15 The lower end of the pin 15 projects in an exposed position above the table 4: and is engaged by each piece ofwork tobe gaged and which is supported upon said table or between the work centering pins '13 and 14;. Ifthework is of such size or dimensions as to drive the pin 15 upwardly from its normal position, the end 25 of the lever 23wi'll be elevated in a multiplied proportion to the amount of upward movement given the pin 15 and accordingly the indicator pointer 34: will be deflected from its set position, which position indicates the standard size for the work to be gaged to. The normal position of the pointer indicates the standard or size to which the piece to be gaged is required to conform, and any plus or minus deviation from this standard of measurement may be registered upon the instrument. The pivot 2d. of the indicator lever 23 is provided with needle point bearings 37 which engage similar shaped cavities in the ends of a steel-hardened bushing which constitutes the pivot at. It will be understood that before the instrument is to be used the proper standard size is indicated upon the dial. This is done by placing a standard piece between the anvil or table f andthe pin 15 01 between said pin 15 and the work holdingpins 13 and 14; The indicatorhand 34 is then moved to the position by said pin 15 to indicate the standard size ofmeasurement and the indicator hand is then set at such position by adjusting the end 25 0f the lever 23 by the screw 29.

Having described my invention, I claim:

1. In a work gaging machine, the eombi n'ation witha standard, means on said standard for supporting work to be gaged, of a i 2. In a workg'aging machine, the combiit nation with holding means for pieces to be gaged, of a cross head, a lever pivoted at one end to said cross head, a pin mounted in said cross head adjacent to said pivot and in a position to be engaged by the pieces being gaged, an adjustable contact pin on said lever en'gaged by said first-named pin, an indicator or gage. the operative member of which is in engagement with the other end of said lever, and an adjusting screw engaged by said lever at the last-named end thereof to naintainthe indicator in the norni'al position or to move it out of such norm'alposition. a j 3 3, 1'11 a work gaging machine, the combination with a standard, a work table and centering pins mounted on said standard, a cross head supported on said standard, an indicator supported on oneend ofsaid cross head, a lever pivoted at one end to said cross liead and the other end of which engages the operating memberof said indicator, a pin near the pivoted end of said lever adapted to be engaged, by the work to be gaged and to actuate saidlever to move the index of thefindicator, and anadjustingscrew in the end of said lever which engages the indicator whereby that end of the lever is adjusted relative to the indicator.

In a machinefor gaging work, the combination with means for holding work to be gaged, of a cross head, a gage indicator mounted, on one end thereof, a lever pivoted .atone end on the other end of said cross head, the other end of said lever engaging r the gage indicator, an adjustingscrew engaging the end of said le er which engages the operating member of the indicator, an adjusting screw penetrating said lever near its pivot and forming a point of contact for tilting the lever, and an actuating pinfengaging said adjusting screw, said actuating pin being itself engaged by the workto be rs g d- H Y. a In testimony whereof I affix my signature, in presence of witness. j j l H i OURT MILLER.

iVitness: V j a ,MATTI-IEW SIEBLER.

Cob itself tliis'patent may b'obta'iired ferffvie ciits e acli; byaitssig th s *demniis sibirer of l ateiits,

Washington, D. G. 

